public MaxMinAntSystem2OptBest4QAP(QAPInstance instance, int numberAnts, double rho,
double alpha, double beta, int maxReinit)
: base(instance.NumberFacilities, QAPUtils.Fitness(instance, QAPUtils.RandomSolution(instance)),
numberAnts, rho, alpha, beta, maxReinit)
{
Instance = instance;
}
public void Start(string fileInput, string fileOutput, int timeLimit)
{
QAPInstance instance = new QAPInstance(fileInput);
int[] assignment = QAPUtils.GRCSolution(instance, 1.0);
QAPUtils.LocalSearch2OptFirst(instance, assignment);
QAPSolution solution = new QAPSolution(instance, assignment);
solution.Write(fileOutput);
}
public void Write(string file)
{
double cost = QAPUtils.Fitness(Instance, Assignment);
using (StreamWriter writer = File.CreateText(file)) {
writer.WriteLine(cost);
writer.WriteLine(Instance.NumberFacilities);
for (int i = 0; i < Instance.NumberFacilities; i++)
{
writer.WriteLine(Assignment[i] + 1);
}
}
}
protected override int[] RandomSolution()
{
int[] solution;
if (generatedSolutions < 2)
{
solution = QAPUtils.GRCSolution(Instance, 1.0);
}
else
{
solution = QAPUtils.RandomSolution(Instance);
}
generatedSolutions++;
return(solution);
}
protected override void Repair(int[] solution)
{
QAPUtils.Repair(Instance, solution);
}
protected override double Fitness(int[] solution)
{
return(QAPUtils.Fitness(Instance, solution));
}
protected override int[] GRCSolution()
{
return(QAPUtils.GRCSolution(Instance, RCLThreshold));
}
protected override int[] GetNeighbor(int[] solution)
{
return(QAPUtils.GetNeighbor(Instance, solution));
}
protected override void PerturbateSolution(int[] solution, int perturbation)
{
QAPUtils.PerturbateSolution(solution, perturbation);
}
protected override int[] InitialSolution()
{
return(QAPUtils.GRCSolution(Instance, RclTreshold));
}
protected override void LocalSearch(int[] individual)
{
QAPUtils.LocalSearch2OptFirst(Instance, individual);
}
protected override void Repair(int[] individual)
{
QAPUtils.Repair(Instance, individual);
}
public override void LocalSearch(int[] solution)
{
QAPUtils.LocalSearch2OptBest(Instance, solution);
}
protected override Tuple <int, int> GetTabu(int[] current, int[] neighbor)
{
return(QAPUtils.GetTabu(current, neighbor));
}
protected override void Improve(int[] solution)
{
QAPUtils.LocalSearch2OptFirst(Instance, solution);
}
protected override double Distance(int[] a, int[] b)
{
return(QAPUtils.Distance(Instance, a, b));
}
protected override double Fitness(int[] individual)
{
return(QAPUtils.Fitness(Instance, individual));
}